I put 240D springs under the frontend of my 85 300D after installing the 240D 4-spd. after the swap the front end had the nose stucking up in the air. made handling a litle squirley, front end wanted to wander.
the 4-spd manual weighs much less than the automatic. might throw off the geometry of the steering/suspention.

After the 240 springs were installed, nose came down, and handles pretty good. just a little soft going around sharp turn on mountain roads. I have a 300TD front sway bar to stiffen it up.

I think putting the 300D springs under your 240 will make the front sit too high. I have been wrong before, but this was my experience.
with your 4 cylinder eng and 4-spd box, they weigh less than a 5 cyl turbo with 4-spd. (assuming you don`t have an auto)

Charlie

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there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works